Top Kubernetes (K8s) Troubleshooting Techniques – Part 1

1. Fixing CrashLoopBackOff Errors in Pods 2. Kubernetes Troubleshooting Deployment Failures: ImagePullBackOff 3. Kubernetes Troubleshooting: Fixing NotReady Node Errors 4. Diagnosing Service and Networking Problems: The Pending Error 5. Kubernetes Troubleshooting High Resource Usage: Solving OOMKilled Errors Using Monitoring and Tracing Tools Posted on September 12, 2025 by Keval Bhogayata, Principal Engineer at Middleware Member post originally published on the Middleware blog by Keval Bhogayata , covering the top 10 Kubernetes Troubleshooting Techniques. Regardless of its popularity, there can be times where even the most seasoned DevOps engineers must troubleshoot Kubernetes. While it excels at handling containerised applications at scale, it can present unique troubleshooting challenges. In this post, we’ll explore the top 10 Kubernetes troubleshooting techniques that every DevOps engineer should master. These K8s troubleshooting tips come from real-world scenarios, showing how to solve common and critical Kubernetes issues quickly and reliably. One of the most common and frustrating issues in Kubernetes is when a pod repeatedly crashes during restarts; a situation known as the CrashLoopBackOff error. This occurs when a container fails to start correctly, and Kubernetes continually attempts to restart it, resulting in a loop of failures.